Surgical Microanatomy for Choroidal Fissure(<SPECIAL ISSUES>Anatomy and Operation of the Temporal Lobe and its Vicinity I)

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  • 脈絡裂(choroidal fissure)近傍の手術に必要な微小外科解剖(<特集>側頭葉とその周辺の解剖と手術I-第25回微小脳神経外科解剖セミナー合同セッションより-)

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We describe the surgical anatomy and several approaches to the lateral ventricles and the choroidal fissure. The lateral ventricles can be separated into the anterior horn, body, trigone, posterior horn and inferior horn. And the choroid plexus is located under the choroidal fissure. Several parts of the lateral ventricle and the choroidal fissure are shown to illustrate the surgical anatomy, and the anatomical relationship between the choroidal fissure and the velum interpositum or inferior horn is also shown in this article. The main surgical approaches to the velum interpositum via the choroidal fissure are the transchoroidal approach using either the transcortical or transcallosal approach. And the surgical approach for the inferior horn is either the transsulcal or transgyrus approach. A thorough knowledge of microsurgical anatomy and several surgical approaches for the lateral ventricles and choroidal fissure is necessary for safer and less invasive surgery.

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